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/r/Python
https://redd.it/18dodr9

TIL The backend of Meta Threads is built with Python 3.10
https://twitter.com/llanga/status/1676846870520291329

/r/Python
https://redd.it/18dvsl9

Understanding TTFB Latency in DJango - Seems absurdly slow after DB optimizations even locally

Hello

Our team has been undergoing optimizing our Django DRF / Graphene stack for latency we can't quite understand the source of our slowdowns

Our Stack:

Python 3.11
Django 4.2.8
DRF 3.14.0
Django Graphene 3.1.5

We've done the 'basic' optimizations of

implementing prefetch / select related
removed all n+1 generated SQL queries

And of course, scrounged the internet looking for answers, and saw the ModelSerializer issue posted here: https://hakibenita.com/django-rest-framework-slow

Which as I understand it is 'mostly' fixed in the latest Django?

We've manually optimized our QuerySets . SQL, and got our worst case SQL latency is around 200ms, most in the 10-100 range.

However, our TTFB, is anywhere from 1 to 3 seconds as measured in dev tools on a browser performing a graphiQL query, as well as in our test suites

Here are some numbers from GraphiQL Console:

One GQL QUery generates 6 optimzied SQL Queries resulting in a response of a 1.4 MB JSon file which has a heavy amount of nested of elements (necessary for our workload)

Django Debug Toolbar numbers:

101.9ms for SQL access

Chrome Dev Tools

6 SQL Querues 56.44 ms (not sure how it knows this?)
44us to send request
937 ms waiting for server response
8.48 ms to download
Total \~1 second for a

/r/django
https://redd.it/18dszpy

Saturday Daily Thread: Resource Request and Sharing! Daily Thread

# Weekly Thread: Resource Request and Sharing 📚

Stumbled upon a useful Python resource? Or are you looking for a guide on a specific topic? Welcome to the Resource Request and Sharing thread!

## How it Works:

1. Request: Can't find a resource on a particular topic? Ask here!
2. Share: Found something useful? Share it with the community.
3. Review: Give or get opinions on Python resources you've used.

## Guidelines:

Please include the type of resource (e.g., book, video, article) and the topic.
Always be respectful when reviewing someone else's shared resource.

## Example Shares:

1. Book: "Fluent Python" \- Great for understanding Pythonic idioms.
2. Video: Python Data Structures \- Excellent overview of Python's built-in data structures.
3. Article: Understanding Python Decorators \- A deep dive into decorators.

## Example Requests:

1. Looking for: Video tutorials on web scraping with Python.
2. Need: Book recommendations for Python machine learning.

Share the knowledge, enrich the community. Happy learning! 🌟

/r/Python
https://redd.it/18e0fjt

Flask-Gravatar

Is Flask-Gravatar not compatible with Flask 3.0??

I am just importing it and it throws me this error--
ImportError: cannot import name '_request_ctx_stack' from 'flask' (C:\\Users\\pc\\OneDrive\\Documents\\Python Projects\\Blog Website - Final Product\\venv\\Lib\\site-packages\\flask\\__init__.py)


Are there any workarounds to this problem??

​

/r/flask
https://redd.it/18dwkly

The Dawn of Concurrency and Parallelism: Python 3.12 Starts to Support a Per-Interpreter GIL

> PEP 684 introduces a per-interpreter GIL, so that sub-interpreters may now be created with a unique GIL per interpreter. This allows Python programs to take full advantage of multiple CPU cores. This is currently only available through the C-API, though a Python API is anticipated for 3.13.

## Summary

- Per-interpreter GIL with C-API is available in Python 3.12
- Python API is anticipated for Python 3.13

## References

- A Per-Interpreter GIL section in _What’s New In Python 3.12_
- PEP 686: A Per-Interpreter GIL
- PEP 734: Multiple Interpreters in the Stdlib

/r/Python
https://redd.it/18e0q7p

Jupyter highlight

Hi all, i'm pretty new on jupyter. I was using notebook 6.5.4 version on Chrome, today I updated to 7.0.6 version, but python function like range() are no longer highlighted.

How can i solve this issue? Thank you.

/r/JupyterNotebooks
https://redd.it/18e1njj

I made a Django+react SaaS boilerplate that leverages the Django Admin to give end-users access to data (via Stripe subscriptions)

Hi!

From the Github repo:

​

>YaSaas is an open-source SaaS boilerplate built on Django REST Framework and React, offering a flexible foundation for entrepreneurs looking to monetize their data.With seamless integration of Stripe subscriptions and leveraging Django admin functionalities.

Will you join me in the darkside where Django Admin can be used by end-users?

/r/django
https://redd.it/18e538s

Built a Python script to get Spotify stats!

Hey r/Python,

I wrote a Python script while I was playing with the Spotify API which can get your Spotify Stats :)

https://preview.redd.it/b32baddnc55c1.png?width=640&format=png&auto=webp&s=e1720187f521f72cf4a6e356a678e6c613018623

Repository Link : https://github.com/ni5arga/spotify-stats-python

Feel free to star and fork!

/r/Python
https://redd.it/18dyf8o

Connecting Django API to a Django crud app. How?

Watched a tutorial in how to create an API with Django and created several APIs with this tool. Now the next step I am planning is to create a basic crud app using Django where I will have JavaScript within a JS template file perform very basic math which will take the user numeric value input from an input tag within a form. My question is since i never developed a full stack application. I am completely lost. I want for the backend (Django) to get the data from the user and store it onto a database SQLite3. As a beginner who has basic knowledge of the client side using HTML5, CSS3 and JavaScript and very little knowledge with Django but only creating APIs. Can anyone give me a recommendation on what is the easiest way to create a crud app which calls an API? Should I allow Django to perform the math or is it ok to allow the client which is JavaScript to perform the math and have Django get and send to the database? Complete newbie! Thank you all.

/r/django
https://redd.it/18e556p

Recently visited page middleware

Supercharge User Experience with Recently Visited Pages Middleware!

Easily implement a recently visited pages feature in your Django rest framework app using the ‘recently-visited-page-middleware’ package. Track and retrieve user-specific page history effortlessly. Enhance user engagement and navigation. Get started with a simple pip install:

pip install recently-visited-page-middleware

Github repository link : https://github.com/Abiorh001/recently_visited_page_middleware

/r/django
https://redd.it/18e8sg2

Trending on GitHub globally 3 days in a row: SuperDuperDB, a Python framework for integrating AI with major databases (making them super-duper)

It is for building AI (into your) apps easily without complex pipelines and make your database intelligent (including vector search), definitely check it out: https://github.com/SuperDuperDB/superduperdb

/r/Python
https://redd.it/18ec2p7

Working on updating the PyDev debugger to use sys.monitoring... I just love my multi-monitor setup with LiClipse ;)

Ok, so, I'm updating the PyDev debugger to use sys.monitoring...Hopefully it'll land soon (I've been working on and off in it for a while and not that much is missing for a final release).

Now, I stopped to breath a little and I just realized I really like using LiClipse with multiple monitors.

My window arrangement using LiClipse

/r/Python
https://redd.it/18eb2aq

Django email, need help

I'm trying to send an email to people when 3 or fewer days are remain, I'm using Django, this is the models.py in my main app, I want to automatically send emails when 3 days or less remain I'm using 4.2

class sub(models.Model):

id = models.UUIDField(default=uuid.uuid4, primary_key = True, editable = False)

provider = models.CharField(max_length=70)

tier = models.CharField(max_length=40)

date_started = models.DateField(auto_now=False, auto_now_add=False)

date_end = models.DateField(auto_now=False, auto_now_add=False, )

author = models.ForeignKey(User, on_delete=models.CASCADE)



def remain(self):

today = date.today()

remaining_days = (self.date_end - today).days

return(remaining_days)

​

​

​

def get_absolute_url(self):

return reverse('sub-detail', kwargs={'pk':self.id})

/r/django
https://redd.it/18eh2h9

What 12,500 Surveys and 6,300 Salaries Data Points Taught Us About Jobs in Germany & Switzerland?

Over the past 2 months, we've delved deep into the preferences of jobseekers and salaries in Germany (DE) and Switzerland (CH).

The results of over 6'300 salary data points and 12'500 survey answers are collected in the Transparent IT Job Market Reports. If you are interested in the findings, you can find direct links below (no paywalls, no gatekeeping, just raw PDFs):

https://static.swissdevjobs.ch/market-reports/IT-Market-Report-2023-SwissDevJobs.pdf

https://static.germantechjobs.de/market-reports/IT-Market-Report-2023-GermanTechJobs.pdf

/r/django
https://redd.it/18eldlp

Authenticate against OAuth2 from your Python CLIs
https://github.com/timo-reymann/python-oauth2-cli-auth

/r/Python
https://redd.it/18efjwe

Unable to connect to the local mysql database

I am trying to create a basic authentication framework for which I need to connect my flask app to a local mysql database, and my credentials seem to be correct as the pymsyql code below works and the localhost page renders the database contents correctly, however, the flasj_mysqldb code does not work and gives the error "error": "'NoneType' object has no attribute 'cursor'"
I have tried looking at different sources all of which say the database credentials might be a problem, but I know for sure that this is not the case. Any help is appreciated.

erroneous code:

from flask import Flask, jsonify
from flaskmysqldb import MySQL

server = Flask(name)
server.config["MYSQLUSER"] = "superuser"
server.config"MYSQL_PASSWORD" = "superpass"
server.config"MYSQL_HOST" = "localhost"
server.config"MYSQL_DB" = "auth"
mysql = MySQL(server)

@server.route("/")
def index():
try:
with mysql.connection.cursor() as cur:


/r/flask
https://redd.it/18ep76i

Django Messages Vs HttpResponse message for Forms

I understand that messages are used to display after a page refresh but let's say you're using HTMX so there isn't a page refresh, would it still be ok to use messages rather than a HttpResponse to show a message or is there some sort of disadvantage of doing so?

I find messages to be a little cleaner than a simple HttpResonse for this case.

Example:

messages.add_message(self.request, messages.SUCCESS, "Thank you! We will get back to you as soon as possible.")

vs

return HttpResponse('<p class="success">Thank you! We will get back to you as soon as possible.</p>')  

&#x200B;

/r/django
https://redd.it/18eq1ny

Django without using Models

I am pretty new to Django with 2-3 years of Python experience writing automation scripts for various tasks. I have read the documentation twice, but I am not sure if what I applied here is the best practice .

The use case is the following:

1. I want the user to be able to login-logout to my site ✅
2. I have create a basic web navigation using html ✅
3. I have created a django form that the user can supply 5 parameters and submit ✅
4. I am creating an item in a directory of my current app (e.g ./myapp/my_directory) ❓

Everything works fine while in development but I am just not sure if that is the best practice here. The worklfloaw on step 4 is that

1. I am creating a directory of let's say a car firm and then
2. subdirectories of their car models,
3. I save some pictures (.jpg) of each model
4. I zip the car firm's directory and delete the original directory
5. I provide a list of downloadable links for all the .zip files in that directory and my plan is to wipe the directory once per month so I doesn't occupy a

/r/django
https://redd.it/18en11d

No changes detected with MAKEMIGRATION command after moving to new DataBase

Hello! I am Trying to Learn Database Setup and migrations in different Scenarios.

So this is what I did
1. Connected to the POSTGRES database on railway.app.
2. Ran first migration command for Django (after initiating project)
3. Removed the Entire DataBase on Railway (to see how Django responds)
4. Created a New Database again on the railway.app
5. Updated the variables for new DB credentials in Django
6. After Running the DEVELOPMENT server, I Found the Session Table Missing Error
7. Tried MAKE MIGRATIONS command, result (No changes detected)


So how Do you Deal with this Scenario, considering I have backed up the Data and I no need to worry about losing Data. How do I restore or reperform Migrations as this is not for app but the migrations which Django needs to Run the entire Project.


&#x200B;

/r/django
https://redd.it/18evv2x